BAXI 424 24kW Combi Boiler with Horizontal Flue

The BAXI 424 24kW LPG Combi Boiler with Horizontal Flue is a compact, high-efficiency LPG combination boiler designed to provide dependable central heating and instant mains-pressure hot water for homes that are not connected to the natural gas network. Supplied with a horizontal flue kit, this complete package offers a convenient solution for straightforward installation while delivering reliable everyday performance.

Featuring a durable stainless steel heat exchanger, robust brass hydraulic components, and OpenTherm compatibility, the BAXI 424 LPG combines energy efficiency with long-term reliability. Its cupboard-fit dimensions make it ideal for properties where installation space is limited, while modern condensing technology helps reduce fuel consumption without compromising comfort.

Key Features

• 24kW LPG Combination (Combi) Boiler
• Includes Horizontal Flue Kit
• Fuel Type: LPG (Liquefied Petroleum Gas)
• Instant mains-pressure hot water
• No separate hot water cylinder required
• ErP A Rated efficiency
• High-efficiency condensing technology
• Stainless steel heat exchanger
• Robust brass hydraulic block
• Compact cupboard-fit design
• OpenTherm compatible
• Internal pressure gauge
• Digital display with fault diagnostics
• Hydrogen blend ready (20%)
• 5-Year manufacturer's warranty

Ideal for Off-Grid Homes

The BAXI 424 LPG Combi Boiler is an excellent choice for homes that use LPG instead of mains natural gas, including rural properties, park homes, and off-grid installations. It delivers both central heating and domestic hot water directly from the boiler, removing the need for a separate hot water cylinder or cold water storage tank.

Efficient Heating & Instant Hot Water

Providing 24kW domestic hot water output and a 10.2 L/min hot water flow rate (Δ35°C), the BAXI 424 LPG offers reliable hot water for everyday household use while maintaining efficient central heating performance.

Its modern condensing technology maximises efficiency and helps reduce LPG consumption, keeping running costs as low as possible.

Compact Design & Easy Installation

Designed for quick and straightforward installation, the BAXI 424 LPG features a lightweight, cupboard-fit design that's ideal for replacement projects and new heating systems.

Dimensions

• Height: 700mm
• Width: 395mm
• Depth: 285mm

The included horizontal flue kit provides everything needed for a professional installation.

Energy Efficient Performance

With an ErP A Rating, advanced condensing technology, and compatibility with OpenTherm heating controls, the BAXI 424 LPG is designed to maximise seasonal efficiency while maintaining consistent heating and hot water performance.

The boiler is also certified for operation with up to 20% hydrogen blends, helping future-proof your heating system.

Smart Heating Control Compatibility

The BAXI 424 LPG supports OpenTherm-compatible smart thermostats, allowing improved boiler modulation, more accurate temperature control, and enhanced energy efficiency throughout the home.

Reliable Performance & Easy Maintenance

Built with a stainless steel heat exchanger, durable brass hydraulic components, and an installer-friendly internal layout, the BAXI 424 LPG is engineered for dependable long-term performance and straightforward servicing.

Warranty & Peace of Mind

The BAXI 424 24kW LPG Combi Boiler includes a 5-Year manufacturer's warranty, providing homeowners with added confidence and long-term peace of mind when installed and registered in accordance with the manufacturer's requirements.

Why Choose the BAXI 424 24kW LPG Combi Boiler with Horizontal Flue?

• Complete boiler and horizontal flue package
• Designed specifically for LPG installations
• Compact cupboard-fit design
• 10.2 L/min hot water flow rate
• Stainless steel heat exchanger
• Robust brass hydraulic block
• OpenTherm compatible
• Hydrogen blend ready (20%)
• Instant mains-pressure hot water
• 5-Year manufacturer's warranty